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3.2 Cell Organelles
KEY CONCEPT Eukaryotic cells share many similarities.
3.2 Cell Organelles
Cells have an internal structure.
3.2 Cell Organelles
Cells have an internal structure.
• The cytoskeleton has many functions.
3.2 Cell Organelles
Cells have an internal structure.
• The cytoskeleton has many functions.
– supports and shapes cell
3.2 Cell Organelles
Cells have an internal structure.
• The cytoskeleton has many functions.
– supports and shapes cell
– helps position and transport organelles
3.2 Cell Organelles
Cells have an internal structure.
• The cytoskeleton has many functions.
– supports and shapes cell
– helps position and transport organelles
– provides strength
3.2 Cell Organelles
Cells have an internal structure.
• The cytoskeleton has many functions.
– supports and shapes cell
– helps position and transport organelles
– provides strength
– assists in cell division
3.2 Cell Organelles
Cells have an internal structure.
• The cytoskeleton has many functions.
– supports and shapes cell
– helps position and transport organelles
– provides strength
– assists in cell division
– aids in cell movement
3.2 Cell Organelles
Several organelles are involved in making and
processing proteins.
3.2 Cell Organelles
Several organelles are involved in making and
processing proteins.
• The nucleus stores genetic information…DNA which
contains genes w/ codes for proteins..
3.2 Cell Organelles
Several organelles are involved in making and
processing proteins.
• The nucleus stores genetic information.
• Many processes occur in the endoplasmic reticulum.
3.2 Cell Organelles
Several organelles are involved in making and
processing proteins.
• The nucleus stores genetic information.
• Many processes occur in the endoplasmic reticulum.
• There are two types of endoplasmic reticulum.
3.2 Cell Organelles
Several organelles are involved in making and
processing proteins.
• The nucleus stores genetic information.
• Many processes occur in the endoplasmic reticulum.
• There are two types of endoplasmic reticulum.
– rough endoplasmic
reticulum
– With ribosomes
3.2 Cell Organelles
Several organelles are involved in making and
processing proteins.
• The nucleus stores genetic information.
• Many processes occur in the endoplasmic reticulum.
• There are two types of endoplasmic reticulum.
– rough endoplasmic
reticulum
– smooth endoplasmic
reticulum
– Without ribosomes.
– Both help in
production of proteins
and lipids.
3.2 Cell Organelles
Several organelles are involved in making and
processing proteins. (continued)
3.2 Cell Organelles
Several organelles are involved in making and
processing proteins. (continued)
• Ribosomes link amino acids to form proteins.
3.2 Cell Organelles
Several organelles are involved in making and
processing proteins. (continued)
• Ribosomes link amino acids to form proteins.
• Golgi Apparatus processes, sorts and delivers proteins.
• Vesicles are membrane-bound sacs that separate
material from cytoplasm….transports protein to Golgi App.
3.2 Cell Organelles
Other organelles have various functions.
3.2 Cell Organelles
Other organelles have various functions.
• Mitochondria supply energy to the cell…convert
molecules of food into usable energy.
3.2 Cell Organelles
Other organelles have various functions.
• Mitochondria supply energy to the cell.
• Vacuoles are fluid-filled sacs that hold materials needed
by a cell like water, food, ions, enzymes….very large in
plants.
3.2 Cell Organelles
Other organelles have various functions.
• Mitochondria supply energy to the cell.
• Vacuoles are fluid-filled sacs that hold materials.
• Lysosomes contain enzymes to digest worn out cell parts
and defend a cell from invaders (bacteria or viruses).
3.2 Cell Organelles
Other organelles have various functions.
• Mitochondria supply energy to the cell.
• Vacuoles are fluid-filled sacs that hold materials.
• Lysosomes contain enzymes to digest material.
• Centrioles are tubes found in the centrosome.
3.2 Cell Organelles
Other organelles have various functions.
• Mitochondria supply energy to the cell.
• Vacuoles are fluid-filled sacs that hold materials.
• Lysosomes contain enzymes to digest material.
• Centrioles are tubes found in the centrosome.
– Centrioles help divide
DNA.
3.2 Cell Organelles
Other organelles have various functions.
• Mitochondria supply energy to the cell.
• Vacuoles are fluid-filled sacs that hold materials.
• Lysosomes contain enzymes to digest material.
• Centrioles are tubes found in the centrosomes.
– Centrioles help divide
DNA.
– Centrioles form cilia and
flagella.
– Not in plants.
3.2 Cell Organelles
Plant cells have cell walls and chloroplasts.
3.2 Cell Organelles
Plant cells have cell walls and chloroplasts.
• A cell wall provides rigid support.
3.2 Cell Organelles
Plant cells have cell walls and chloroplasts.
• A cell wall provides rigid support.
• Chloroplasts convert solar energy to chemical energy.